Mint On Card carries the previously linked outfit as well as a few more of DollZone's that would work for Ouji, mostly at $68. Some fit your description. Pricy, but not $100+, at least.
Also try
Promise of the World. I haven't ordered from them yet, but they have some really adorable clothes for pretty good prices and were featured on BJDCollecstasy so I'm more inclined to trust it. The more elaborate outfits are more expensive, but you can get things like short pants and vests for under $10. The only reason I haven't ordered is I want it all! TwT