Birch is available in descending magnitudes of quality from Finland, Latvia (Baltic), Russia (also sometimes called Baltic) and China. I feel that quoting a price on birch plywood without quoting the quality is quite misleading as there is a major variation in quality/price. The best surface grade (in birch plywood) with no blemishes or defects is A (almost mythical, these days), followed by S, B and BB. For anything where only one side shows then a B/BB (one side B, the other BB) will be more than adequate - just check the sheet as a Ruissian BB is normally much inferior to a Finnish one. Personally for a tool cabinet I see no problems in using African, Far Eastern, Chinese or South American hardwood plywood which may or may not be available cheaper than the birch although all are coarser than birch and will require edge lipping to finish. I'd even consider MDF or MFC (melamine faced chipboard) as they are both considerably cheaper (more dosh to spend on tools, therefore) - does that make me a phillistine or a pragmatist?
Scrit