My husband is a retired butcher and I am certified in Culinary Arts. Marinades are expensive. Try soaking your beef steak or roast in Cola or Dr. Thunder from Walmart. Cover for 24 hrs. Then season and cook.
Add a delicious oriental flavor to your meat or veggies before putting them on the grill. This page contains teriyaki marinade recipes.
You can use a less expensive cut of meat with a tenderizing marinade, to create a delicious main dish. This is a page about tough meat marinade.