ThinkGeek Buy One Get One 50% off Site-Wide This Weekend

Special promo from ThinkGeek this week. Buy first one full price, and the second one will be 50% off. Details copied & pasted from their website:

50% off qualifying merchandise when you also purchase a second item of equal or greater value (multiple units of the same item may all be discounted if there are also the same quantity of other items of equal or greater value in your cart.) Offer valid through September 28, 2014, 11:59pm ET. Offer cannot be combined with other promotional code-based offers, coupons or discounts. Gift cards, taxes and shipping and handling charges are not applicable toward the minimum purchase requirement and are not included in the offer. Offer is non-transferable and not redeemable for cash or cash equivalents. No adjustments on previous purchases. Select product exclusions may apply and will be indicated on individual product pages. Other exclusions may apply. We reserve the right to cancel any order due to unauthorized, altered or ineligible use of discounts and to modify or cancel these promotions due to system error or unforeseen problems. Subject to change, including termination, without notice. Use promo code: BIOBOGO.