replacing velcro- how much does it cost?

crazgrljes

I bulked up my stash some last week with some used BG's. They were used for a year and are in pretty good shape but I think they will need the velcro changed sooner rather than later. So, for anyone that has had velcro replaced, how much did it cost, and where did you get it done?

Oh and also...is there really a difference between velcro, aplix, hook and loop? It's all the same.....right?