Best VR games for 10€ or less?

FORM - $5.99
GNOG - $4.99
GORN - $9.99
Crysis VRigade - $7.99
Westworld Awakening - $9.89

Climbey if you like parkour challenge stuff, Dead Effect 2 if you like zombie sci-fi looter shooters. Both are under 10 bucks right now.

The Talos Principle VR looks good.

Rise of the tomb raider.

If you like dungeon games;
Karnage Chronicles
Gorn
VR Dungeon Knight

its a little bit over 10, but one of the best games i know Subnautica: https://store.steampowered.com/app/264710/Subnautica/

Buy a sports or rhythm game. Indefinite replay value, lots of fun and very healthy.
Racketnx and Dance Collider are my absolute favorites.
Fisherman's Tale is a nice short game you can play with a (free) Viveport subscription. I know both other games are on Viveport too but with those, two weeks won't be enough so you want to own them I think.

Batman™: Arkham VR 9.99
Play with a good pair of headphones, I used the vive in ear ones and the experience was amazing, you can feel the game.

Creed: Rise to Glory
A great game if you wanna sweat your a** off. Double the fun with friends in MP!!!

Elite Dangerous
The 1st game i tried in VR, and it blew me out of my socks. The Deluxe Edition is a steal for 10 bucks!

Fallout 4 VR
May be slightly out of your price range, but it´s the most complete VR game i´ve encountered yet.
Skyrim VR will be the same, just with swords and magic.

Onward
I´m 54hrs into this and the fantastic co-op easily holds it up as most played VR game in my library.
If you like shooty bang bang and got some buddies, grab it!

Gorn i cannot solely recommend due to it´s gimmicky nature. It´s neatly fleshed out and has got good progression, but can be played rather casually - you don´t have to put any ammount of force or effort - that´s where it differs from Blade & Sorcery, which kind of tainted my view on any blade wielding games out there.

Have you read into the news of Beat Saber? After facebook bought the game? Not sure if its still going to be on Steam probably a good idea to buy it before its gone.
https://store.steampowered.com/app/846470/Moss/
https://www.oculus.com/experiences/rift/1180401875303371/?locale=en_US

Synth Riders for 12,36€
https://store.steampowered.com/app/885000/Synth_Riders/
It has custom maps like Beat Saber.

https://store.steampowered.com/app/494150/The_Thrill_of_the_Fight__VR_Boxing/

If there is enough space to exercise !!