If you can't figure out yourself and build the mod, and someone else has to spend the time to do so, why then shouldn't they charge for it. X-Cart Devlopment wouldn't do it for free.... we all know that is true.
Besides, with all the freebie mods and advice FunkyDunk has given to the members of this forum, what's $49.50 for a mod you really need. I'm sure you have profited 10 times that, from his postings here if you have done any serious mods to your cart and use this forum to keep on track and save time.
$49.50 for fuctionality that notifies your clients when a product is back in stock.
That translates into a higher sales conversion and probaly greater customer retention. Don't be so short-sighted. Pennywise, pound foolish!
Never understimate the predictability of stupidity!
My two cents,
Glen