100 pieces, R-P factory-loaded, once-fired brass cases. Deprimed, but not resized, and wet tumbled super clean inside and out. Remington has used at least four 7mm RM headstamp variations over the years and these are all the same type - the large sized, lower-case "mm."
$55 shipped USPS Priority Insured. PP F&F preferred but Zelle, check, or MO is fine if that works better for you.
That equals 45 cents per case plus USPS Small Flat Rate box shipping. I actually have 140 of these but I've tried and 100 is all that will fit in a small flat rate box. If the buyer wants them all, I'll make the same offer of 45 cents each and either a $16 Medium Flat Rate box or a "weight and Distance" box if that ends up being cheaper to your location.
Cheers,
Rex