Groupon discounts a selection of HP.com Credits, as listed below. That's up to $9 less than our mention from a month ago and a savings of up to $111. The promotional value expires July 12. Note that these vouchers will not stack with other HP coupons. The deals, ending June 11:

• $75 HP Credit for $46 ($29 off)
• $200 HP Credit for $139 ($61 off)
• $350 HP Credit for $262 ($88 off)
• $500 HP Credit for $380 ($120 off)