@barbierx wrote:
... I'm disgusted with a site which makes me follow 100s of rules to the letter, ...
I notice that one rule you don't follow is charging the correct sales tax.
New Brunswick has a 15% HST rate not 16%
I assume you are registered with Revenue Canada to charge HST.
Any particular reason you are not collecting GST/HST for the other provinces/territories?
The stuff you have for sale could be set up as your own site since you are selling to a very special type of buyer.