Hello, so here is my problem, maybe it will be helpfull for someone else to prevent being screwed. I bought uncracked 36-40T MRP G2 SL changuide from this shop:
New & Used Bike Parts
And they sent me 32-36T with cracked lower guide. Now since this had to be done on purpose...
Their solution is for me to send it back to them at my expense which is around 15gbp ! And this way I would be punished for their mistake or trying to f*ck over somebody. They are not willing to take responsibility and take it back on their expense or send me at least partial refund of 15gbp. So thats my experience with this unserious shop.