Farnell/element14 has plenty of TDA7293 last I looked, which are mostly better and very nearly pin-compatible - just be careful with the bootstrap circuit. They also have 7294's at a strangely high price, but nevertheless in-stock and genuine.
TDA7293 is fully compatible in TDA7294 circuits, but not vice versa. Hence, I'd also get 7293's as they're more versatile.
Best regards!
Best regards!