300 euro is not cheap - but then the pitfalls of buying a distressed property are legion.
If people have a relationship with a solicitor, the solicitor will, typically, not charge to review one, or at most, two sets of title deeds without charge as they will be getting the actual conveyancing transaction.
Otherwise, there is a cost attached in reviewing deeds to enable a purchaser acquire a saleable property.
Shopping around involves calling multiple solicitors and asking for a quote.
"Had someone who has bought a few auction properties look over documents as well and said the docs look straightforward. "
Does this person have Professional Indemnity Insurance? If not, do not rely on their advice.
Of course, if you are a cash purchaser ( so no darned Lending Institution asking pesky questions and requiring a Solicitors Undertaking to furnish a Certificate of Title) and are unconcerned about a dubious title , that you will never be able to sell on, you are free to decide that you don't need a solicitor and can review a title yourself.
This is not advisable
mf