If you can get a brand new one for $50 why are you hesitating? I would get it in a heartbeat.

FWIW I have a MC pram (not the model you have mentioned) and I have had no issues. Easy to manoevre, easy to fold down, comfortable enough for DS, enough room to pack groceries underneath. I have been using it for 10 months and no troubles.

Just because it is a 'cheaper' brand doesn't mean it isn't quality. It's not as pretty as a P&T but it sure does the same job.