A very similar set to this sold for $4995 this time last year, without XO or wings.

As a guide, the 802/H808 combo should go for about $3000-4000, the 803A pair for about $800-1200, the XOs for $300-500 and the cabs about $500-1000, as they have wings, if they were all sold separately.
All based on sales in my spreadsheet over the last 5 years.