Zypher was never a legendary mech, to my knowledge. I've played for 1 ½ years, but quit about a week ago. If it were a Legendary Mech, I am glad they changed it to an Epic variation. It does not deserve a legendary spot, considering surge and bastion, who both can freeze you but have more than 1 ability. When I played, I didn't even use zypher anymore, and used other mechs. Zypher is almost like a checkpoint mech, when you unlock zypher, it makes you happy, you when a ton of matches, and it gives you purpose of playing mech arena. However, once you get further in the game, you realize that there are way better mechs, even if it doesn't freeze you. 

There is no way in heck, that your price range for a Mech goes up to 105$. To my knowledge, it should only go that high if they are trying to give you maxed mechs, that are Legendary, OR, it just that you bought so much things, that now they know you will buy, and they raise the price. Don't spend money, it will get you in a deeper hole.

Yes they are overpriced. For price of 1 gold mech, you can actually purchase 3-4 seperate game titles

But anyway it was like one or two years ago because I've been playing for a year or two.