youre still asking way to much for your parts. I live in the same area as you and even then way too much. youre basing your price on amazon new pricing in which yes they are inflated. at best youre gonna get max 500-550 for each gpu. 550x8=$4400 look on ksl and see for yourself my man. if i was looking to buy your rig as is id offer $3500 and id be picking up locally. just because its built by voskcoin/remote mine doesnt mean you have anything special.
No, I did not base my prices on new cards. New cards on Amazon are $1,400 to $2,000. Used ones are about half that. Lying about it isn't going to get you anywhere.
The problem with trying to use Amazon Used prices, which are higher than other companies, is that you wouldnt be able to even sell these on Amazon. Not only does Amazon require new produt invoices from actual distributors which would require you to have a resale license, you would also need to take the 10%+ return ratio that amazon has on graphics cards. You should be using eBay to price your graphics cards and atleast subtracting 15% due to the fees and shipping.