So y'all factor in cost of shipping /duty/gas used driving to pt roberts/maybe time to do that in some cases but the point is ALL costs ?
Yup. I have. By picking it up stateside, you also save any brokerage costs because you are brokering it yourself when you bring it across, although I have noticed companies including brokerage fees in their shipping charges as a nominal cost since they do more of it these days.
To give you an idea of savings I had, a set of wheels and tires that would have cost me over $3200 in Canada was $1680 USD. Duty was 6%, then GST. Well worth the 45 miunte drive south.