If money is tight try the Tiger Paws. I bought one from Argos about 5 yrs ago, cost about £20. Still going strong. Just bought another off fleabay for £30 but don't think there are any remaining from the seller, so it could be a case of just keeping an eye out. Packs small, fairly light weight, not as light as a laser comp etc, but a fraction of the price
Seriously great little tent for buttons.