Same here! The M.A.S.K. toys were ridiculously cool, and I had to have every damn one of them. But at least with M.A.S.K. you got an action figure (with a mask) and a vehicle that could transform into another vehicle, so it didn't feel NEARLY as shameless a ploy to me as G.I. Joe.
That toy line got seriously way out of hand, especially in Season Two of the cartoon when they introduced something like a dozen new kinds of Cobra Vipers, many of which required you to purchase an enormous and expensive-ass vehicle to obtain, like:
Motor Vipers - that came with an expensive S.T.U.N. vehicle.
Strato Vipers - that came with the gigantic and even more expensive SR-71-styled Night Raven jet.
Battle Android Troopers - the G.I. Joe equivalent of Foot Soldiers from TMNT, because you felt like since the Joes had to fight armies of the suckers in the show, that meant YOU had to buy armies of the suckers, too! Toy logic can be scary.
The Terror Drome - Shut up. Just... shut up.
And heaven help you if you had to have the insanely badass, 7 & 1/2-foot long USS Flagg aircraft carrier. That's right. The toy was taller than SHAQUILLE O'NEAL! Top THAT, Bratz! THAT'S how toys are made! So, yeah, M.A.S.K. was like a GATEWAY DRUG to the assembly-required, plastic, crack-cocaine G.I. Joe was pushing!