Groupon offers an $80 Vistaprint Credit for $20. Plus, receive 30% off sitewide via this offer. (The personalized school supplies, clothing, and gifts can be found here, although Vistaprint's site says the credit can be used on all Vistaprint products.) That's $60 off and among the best such deals we've seen for Vistaprint. (We saw a $70 credit for $17 three days ago.) The voucher excludes shipping costs and sales tax. (Orders of $105 or more qualify for free shipping.) The credit is valid until October 31. Deal ends July 31.