Huge difference in cost. Thoughts?

Huge difference in in cost? Thoughts?

I asked four vendors (MONA, LGG, KUOLOLIT and PROVENCE) for a cost on the following moissanite tennis bracelet: DEF Color; VVS; solid yellow 14K gold; 6.5mm thick (one caret each stone); excellent polish, cut, clarity, finish, ect; 6.5" length.

1st vendor @ 24 carats $2299.00 - LGG 2nd vendor @ 23 carats $1605.00 - PROVENCE/Sam 3rd vendor - no return quote yet - KUOLOLIT 4th vendor - no total carat given, told would need a CAD. $1500.00 - MONA

I've never done business with any of these vendors and am concerned about the import duty tax.

Which vendor would you go with and why?

Thanks for any input!!!