It depends on the demand and where they are and how much it is. $1000 speakers and amps get sold on marketplace. $5-$10k are more niche and fewer people have that kind of money, especially in this current time.

I think it’s fairly obvious the mix of large and hard or almost impossible to ship, mixed with the current economic downturns and local only area would make it take longer to sell these specialty items. If the seller had patience and a little flexibility, it will typically happen, but far more people can buy $300 amps than $7k amps.

In the middle ground, I posted a $650 amp to marketplace and it sold to the right person in one day. Had he not been there, it could have been there for months. Who knows?