id say check out proaim.ca
they have a used section... i get a lot of my gear from the used section.. the products i was told are not actually used but showpieces kept in the stores to showcase to customers which acquire scratches and stuff .
A youtuber paarker walbeck did a comparison video between glidecam and flycam. I'd say based on tht, go for flycam redking.
I'd choose my proaim cart over this any day. Less than half the price and quality just as good. Cannot imagine shelling out $3000 for a cart!!!