Got a pear and a nectarine at Aldi's this morning. The pear is on a 'semi-dwarf' rootstock. Had always wanted a nectarine and was delighted to find one at Aldi's.
My local Aldi's had a lot of these fruit trees and an excellent selection. My lottie neighbour got two different varieties of cherry a plum and an apricot.
Morrisons supermarkets are also doing an offer on fruit trees - their's are £4.99 - and their apple varieties available this morning included Charles Ross, Grenadier (a cooker), Cox's, Sunset, Bramley - and these are on M26 rootstock, which is semi-dwarf. Morrisons seem to be re-stocking their fruit trees as when I was in there last Saturday they didn't have many left but there was a good selection again today.