What is best, lowest cost Product to stick outside pabement-type wall stones together?

Found Loctite Pavement Paver caluking in tube for sticking pavement stones together. Requires mineral spirits to clean up [that's ok] WORKS GREAT!!!
But I'm doing a stacked wall of random sized stones and the whole tube did about 0.0001% of what is already simply stacked up there now! Again what it did, I''m impressed with, and even though the stones were a bit 'sandy' or 'dusty' Loctite stuck them together! Bolor wasn't too bad either.
Problem. Tube costs $$$$ at Home Depot and I'm going to need maybe a 100 of them. So anybody work with a great alternative?
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Robert,
Mortar mix. Buy a 10 lb bag. Add water. Stir. Do the wall till the mortar is gone. Then decide how much mortar you'll need for the whole job. Look at the amount of time it took to use 10 lbs. Then decide what size bags you want to buy. Remember that unopened bags of mortar may go bad with time. Keep them away from damp.
Dave M.
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