Groupon discounts a selection of HP.com Credits, as listed below. That's up to $10 less than our mention from last week 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 May 11:

• $75 HP Credit for $47 ($28 off)
• $200 HP Credit for $144 ($56 off)
• $350 HP Credit for $268 ($82 off)
• $500 HP Credit for $389 ($111 off)