I use probio 7. Not sure if it meets ur criteria they cost 24.99 for 100 tablets from H&B
I have 2 that I use ... one is vitalbiome (clinically proven to help IBS) and probio5.
Alflorex. You can order online or get it from boots. My dietation recommend it im on the Low Fodmap diet :)
I use spring valley probiotic multi enzyme. It seems to be helping out alot and it only costed 5 dollars