I think honestly that the double rifle market is very soft right now. What has happened is those that appreciate the value of a double rifle now are of an age to execute their vision. Their vision is highly selective: If modern is your desire, the answer is Heym and Rigby. If vintage is your aim, the desire is British Nitro Express rifles.
I am not seeing the same-day sale listings on the economy options. Krieghoffs, Merkels, Sabattis, Chapuis, and Verney-Carrons don’t jump off the shelves unless they are priced unusually low.
I tell everyone that calls me, for 90% of aspirants, the best double rifle you can buy is an AMAZING $10,000 magazine rifle like a Dakota or similar. For those that truly have the desire and use for a double rifle, the choice should be a modern Heym for reliability and monometal ammo tolerance, or a vintage, fussy to feed British double for absolutely the highest quality. Both latter options are $25k and up for good ones.
No matter what, don’t buy a lousy double rifle, they are not a pleasure to own and they are very hard to sell. If you don’t have the need or the budget for a proper double rifle, stick to world class magazine rifles that cost a fraction of the price.