Depends on a few things: where the property is, how old it is, whether it is furnished etc. No reputable supplier will proceed unless they think they can provide good value.
I'm happy to talk prices over the phone, but posting prices in a forum usually leads to tears.
I can confirm that with half a dozen calls it's usually possible to find someone cheaper than us. But clients and accountants who use us over and over again reckon we're worth the extra few tax deductible dollars.
Scott