Was looking for a set of small glass tumblers today when I spotted these in Tesco. 6 x 190ml, 6 x 240ml and 6 x 260ml plain glass dishwasher-safe tumblers for just £2.42. They are suprisingly weighty and solid for the price. Can't see them online, so presumably in-store only?
Tesco also had sets of 18 dimpled glass tumblers for £4.00.