The brother-in-law in Portland Oregon was always telling me to buy this pc or that pc for such and such a price (instead of the mac) till I emailed him the costs of what the ones he recommended were in the UK compared to what he could get them for in the states...
He couldn't believe the difference in prices, anywhere from £100 to £300 dearer here in the UK compared to the prices he told me they were in the USA... 
Don't you guys in the USA have to pay any kind of VAT or TAX on computers 
Tax yes VAT no, you can avoid paying tax by buying mail order. This only works as long as that business does not have a store in your state.