Buy it. Superb gun in all ways.
One of if not the most accurate out of the box 44 Mags's. These guns dominated the IHMSA matches when I was shooting. If you were serious, you had a Dan Wesson. They took more hot loads than any gun should be asked and just kept on going. Mine is still as tight as as the day I bought it.
As with any mechanical device there will always be some less than perfect examples, but I am not aware of any chronic issues with the Model 44 or 744. The biggest problems these guns had were caused by amateur and pro gunsmiths that had no idea as to how to properly tune a DW. The DW action is different and has a different feel because of the short throw. This is not a bad thing just takes a little getting used to.
As to price here's the best part, DW's have relatively low resale values though the Model 44 probably holds better than most other DW models. Going price for a used Monson Model 44 around here is $375 to $425 depending upon condition.
Take Care