I think that may be a little harsh given how little information we have here. .................. It's not like the solicitor is in a position to verify that the bank will release the mortgage until the funds are sitting in their account.
They had previously cried poverty when the 10% non-refundable deposit was due and my solicitor agreed it was unusual but advised me to accept they would pay the full amount on the closing date.
Yes, that is common, but solicitors generally have to take their clients' word on the matter. They have no ability to actually confirm whether the funds exist in reality. No bank will confirm same to a solicitor and statements and loan offers are easily doctored or faked entirely. I recall a Sherry Fitz agent in Dublin a few years back vent their frustration at having multiple sales fall through when it turned out that the purchasers didn't have the necessary funds even after providing solicitors letters confirming all was in order.
Is it all that unusual for purchasers to request lower deposits? In most cases such sales go through without an issue. We don't know enough to guess whether the solicitor's advice to proceed was well founded or not. If they went sale agreed in January and only agreed on a closing date in late October there's more going on here than we're aware of.