Seems very common at the moment.

Between myself and a couple of friends who trade here on eBay over 10 sales in the last few weeks we've had:

 - 1 pay at auction end;

 - 4 at five days;

 - 1 at six days and;

 - 2 at seven days. 

Two payments currently outstanding at 48 hours (one of whom bid 3 minutes prior to auction end).

In only one case was there any contact from the Buyer to advise the payment would be delayed (although they paid on day 7 instead of day 5 as indicated in their initial contact).

No response at all to any follow up messages sent.

I just think it's a reflection on the self-centred societal attitudes of the day to be honest.