And if you do, what is your buy box?

Low quality, cheap mass produced big box units.If nothing else buy a better brank from a plumbing supply store, nit a big box store

Direct lenders also have full control over their guidelines, meaning if something does not check all their boxes, they can make exceptions to close your deal.

There's so many out of the box ways to get to your goals.

Even if you have the receipt and the box is still wrapped, you will not get full price.

And be sure to smell behind cabinets-especially kitchen cabinets that don't go all the way to the ceiling (cats sit on cabinets and pee right there), bottom of doors (urine drips down door and runs across the unpainted bottom, it gets absorbed and still smells), any heat/ac vents on the floor or low on the walls (looks like a litter box to cats), thresholds (pee at the door and the pee runs between all the cracks) behind toe strips, baseboards, etc.)

I like to use a rents deposit box that tenants can use to put their payment in. 

The Daily, the NY Times Podcast - discusses the recent NAR bombshell decision that rocked the real estate world.BTW - Did you know that the NAR owns the company that makes the lock boxes that agents use every day?

If I had to use a big box store I'd use Behr. 

Because that's exactly what big box HML are.Or do you mean Private Lender like an individual lending out their private capital for a real estate investor?