Disclaimer: I'm a CSR for Catwa (also a regular on this forum in every respect, so I'm not one of those store representatives who only posts to shill on behalf of the brand I work for. I try to help out whenever there is a Catwa question here, but - as my post count will attest! - I post a lot in general, too) but I'm not here to "sell you" on that brand. I'll just give you the basic facts. This assumes - since you were considering the cost - that you're looking for a female Bento head. Catwa also has non-Bento heads, which start at L$900, but the full Bento heads cost L$5,000.
Catwa currently has 27 female Bento mesh heads to choose from, everything from little pixie faces to wide-eyed Jessica Rabbit to angular Angelina Jolie styles.
All Catwa Bento heads have two layers (upper and lower) which allows for a lot of customisation and layering of appliers, and each layer has 8 areas: hair, mouth (for teeth and tongue appliers), lashes, brows, eye makeup, neck tattoo, blush, and lipstick).
Each head comes with 24 full face expressions and 16 full-face motion capture AOs (the latter are currently being updated from 30 seconds in length to 60 seconds, as all of the heads are moving from v3.2 to v4.0, at a rate of roughly two per day, in release order).
You can choose to hide or show the following: top left side of head, top right side of head, brain, upper teeth, lower teeth, left ear, right ear, caruncle (the pink inner corner of the eye), upper lashes, lower lashes, uvula (the dangly bit at the back of the mouth), and tongue.
You can tint the following (some on both layers, and some are a single tint) - skin, teeth, uvula, brows, neck tattoo, caruncle, lashes, tongue, lips, blush, ears, hairbase. The Master HUD has 10 save slots for different tints.
You can adjust the gloss levels in the skin, and on the upper and lower layers of the lips. The new 4.0 updates also have materials support for things like smooth skin, pores, wrinkles, etc.
Lashes can be applied separately (upper and lower) so you can mix and match.
The new gift HD lips will be included free with all the 4.0 updated heads.
The 4.0 head updates also include a new eye applier, which doesn't only apply the Catwa default eye texture options, but also allows you to resize and move any appliers on your Catwa eyes, as well as clear specular and materials shine that may cause issues in certain lighting.
Demos are - of course - free (they each feature a small strip of 'missing pixels' to discourage copybotting) and I strongly suggest that you try them before making any decision.
Default skins in the female HUD are by The Skinnery, and (new to the 4.0 releases) by DeeTaleZ.
Inworld purchases give you 5% store credit (note that Marketplace purchases do not). Any purchases made both inworld and on Marketplace can be redelivered in the store if necessary. (When a Catwa head is updated we ask that you go to the store to redeliver (there are a lot of scammers around, giving out "Bento head updates" so - for your security - Catwa doesn't send automatic updates. All updates are free and it's easy to move your entire look from an old Catwa head to an updated or new one using the gift Bento presets HUD.)
24/7 support in the Catwa Head Friends group, and there is also a Discord server being set up. We have 5 CSRs (myself included) and we cover almost all timezones. If no CSR is present then the group is incredibly helpful and will often know the fix for many issues, having seen us guide people step-by-step many times.
There are numerous free gifts in the store, including (but not limited to) -
additional save slots HUDs with multiple pages of saves for all layers - including special ones for eyeshadow and blush so that eye makeup covering both those areas can be saved in a single HUD (also includes a lot of free makeup)
Bento presets save HUD, which will save the appliers, tints, and specific layers on your head (I use mine for saved outfits; save the entire facial look for one outfit on its own HUD in the outfit folder)
HD lip add-on (just released)
unrigged Omega mesh eyes
additional lashes HUD
numerous Bento animations, including five sets of 12 (60 total) animated lip 'moods'
(Please note: you will only be able to get the free gifts if you are wearing a Catwa Bento head when you click the gift bag in the store.)
Those are the facts, off the top of my head. That said, your purchase should ultimately be your choice. If you decide that you prefer Genus, or Lelutka, Akeruka, or LAQ etc over Catwa then I'm certainly not going to try and change your mind.
I hope you find a head that you're happy with. If/when you do, please share some pics in the How Does Your Avatar Look Today thread. We'd love to see you in there