BE SURE TO LOOK FOR PRODUCTS WITH THE O-RING SEALS. 
Well, here we are in an unenviable position.  There were a few of us who were selling our oil squirter delete sets in the $50-$60 range.  It allowed us to make a profit after commissions, shipping, and other expenses were paid.  Then someone from California saturated the listings with their offerings for $19.95 (though without the groove & sealing o-ring). As you can imagine, our sales hit a wall.  At $19.95, I can't make any money, so I'm going to exit this product when my stock runs out.  I have 30 sets left, and I'm going to sell them for $17.50 per set until they're gone.   Buy one, or buy them all.  Still free shipping!!