A 5m Aluula Roam kite is $2499. Guessing an Aluula wing will be about the same. Less struts than a kite but more complexity in the boom strut and handles and stuff
www.google.com.au/search?q=aluula+roam+kite&source=lnt&tbs=ctr:countryAUThe background picture shows a window. The other pictures show stripey slot things that might be peekaboo windows. That could be a good idea.
oceanrodeo.ca/pages/wingsurfingI would have liked to see a photo of the "ridgeback boom". It's a pretty important component to not show, especially with 12-15 psi in it.
The sticky-outey valves can be a magnet for the leash. Most brands put a neoprene cover over it. It can still tangle but at least you're not pulling on the valve when it's stuck.
Dyneema gets fluffy with age. If there's any exposed hook velcro on the leash cuff the fluffy Dyneema will grab onto it. After a few gybes my hand got tied up with bits if leash binding it. Assuming it's got bungy inside, anything I have ever had with bungie has perished and lost its bunge. You end up with a floppy leash that can get caught around your neck. I replaced mine with a coiled urethane leash. No sticking fluffy bits and no tangles around the neck. The odd tangle in the coil pulls out pretty easily.
I have a philosophical problem with buying ultra-premium priced gear. It might be nice to own and to use, but it rarely allows you to do anything that you can't do with something cheap and cheerful. You're generally better off riding more and developing your skills rather than buy an expensive thing that won't necessarily make you a better rider. Even extra longevity is a two-edged thing. Arguably a new mid-priced thing is going to work better than a 3-4 year old ultra expensive thing.
Absolutely buy whatever you like, especially if it makes you happy. Even better if it has specific features or a look or feel that enhances the activity. Personally I have a weakness for light weight, carbon and tuttle mounts in boards and foils. Still looking for a "killer app" in wings to grab my attention.