the locks are definitely worth the cost. They are built right and will last.
I bought my torklifts from Adventure RV. $379.99 for a set of 4. Price includes either long or short torklifts AND they are stainless steel, not the painted ones.
http://www.adventurerv.net/torklift-fast-gun-fastguns-turnbuckle-truck-camper-tie-down-set-p-1362.htmlThe key locks are around $10 each and also stainless;
http://www.adventurerv.net/torklift-truck-camper-fastgun-turnbuckles-key-locks-pack-p-1457.html