Good source for Black & Decker replacement part?

[Uncle Wig]

I have a B&D hand sander and I need a replacement dust bag. The part number is 387111-00. (It's frustrating that they don't carry these at Home Depot where I purchased the tool.)

Any recommendations for a good online source?

1800toolrepair.com has 'em but the also seem to have a lot of complaints. Maybe ereplacementparts.com? There's at least one seller on Amazon that has them for about twice as much.