Often the price difference is marketing. Like anything else, if you compare expensive dacs, some may sound like their price, others will not. A $32K dac may sound worse than a well designed $1k dac (Lite Dac 60 with a few mods) but it is housed in solid steel with fancy artistic designs and laser engraved logos/buttons. The only difference being that they used a $20 TXCO with low phase jitter than a standard Chinese one at $0.50 to make it sound well grounded. So if you take away that the metal housing, the exotic wood, and the logo, one is left with the internals of a $500 dac.
Another $32k dac has some amazing engineering but priced higher because a select people are willing to pay for it although everything over $5k is pure profit. You may even come across a dealer that has a demo unit or trying to get rid of stock that is at 75% off. These deals are not typically advertised.
Also learn about manufacturing costs - especially with medium to small companies. A do it yourself home builder has higher costs and a medium company can sell you a dac for $4000 that costs $500 to manufacture. Don’t be afraid to negotiate and offer to pay what value you place on the item.
I find that companies that market and advertise less gives you more for your money.