most companies make them....
but cyma do a very extensive range - avoid if possible the slightly cheaper 5xx cyma ak's or spartac's - rebranded cheap cyma's
they are about 10 euro cheaper than the 028 starter cyma's but have a plastic top cover
time that breaks being plastic, then it will cost you a tenner to replace - so may as well get a "proper" cyma starter for a tiny bit more
Or you can go to the higher end cyma's full metal receiver or go for higher end AK's
as a guide 80 euro is gonna be a bit plasticy
100euro should have metal top cover, which is important if you go for folding stock or battery under cover
(plastic ones won't last too long with frequent battery change)
plastic receiver ain't too bad like on the 028 range of 47's - just avoid plastic top covers as it is false economy in my book