I ordered a bubble tip online from a certain vendor and it arrived non-sticky. It was incredibly moody, never really regained its stickiness. I'd find it fully inflated and non-reactive or fully deflated and floating around a couple of times. I have since donated it to the local reef farm for rehab after 3 weeks of frustration. $90 with shipping down the drain.
I have 2 others that are perfectly healthy bought from stores in the area. Stuck right where I put them and they feed regularly.
Definitely, your miles may vary...my next one will be bought local.