Does anyone know of a place that sells dried cranberries and/or blueberries that are sweetened with Splenda?

not gaurenteed but do you have a trader joe's near you?

Yep, got that and a Whole Foods... haven't seen them at either place. I can't even seem to find them online.

I've only seen cane syrup or sugar added in chain stores, but I've found unsweetened at local markets. I'll keep an eye out.

You could make them yourself.
Bake your berries at the lowest possible temperature in the oven for like 6 hours, or use a food dehydrator. I would add splenda before baking just so it is more evenly distributed and absorbed.
The Cranberries I would mash or squish before drying, if there is a costco around, they always have big bags of frozen berries that you could dry out.
I have made a bunch of different dried fruit in the past but never cran/blueberries. Blackberries turned out really well. I would hate adding Splenda to Blueberries because they are so naturally wonderfully sweet. Do commercial companies add sugar?

Yeah, I could definitely make my own - I'm just lazy and would rather buy them already made. I may still make some though.

sure sounds good to me yum!! and never thought about dehydrating in an oven... rather creative there!! on the same note, anyone ever dehydrate brocolli and blend em in a blender and throw them in with your shakes? I have been really interested in trying this since I absolutely hate brocolli

I forget the cost, but there is a company that sells dehydrated fruits and veggies e.g. Just Blueberries, Just strawberries, etc. WHole foods sells them. I don't think they add any sweetner.