You should still consider getting a 2i as there are reports of bad batches of acekard 2.1s on the market. The acekard 2i is compatible with every DS and is the same price as the 2.1 at www.leetmod.com

They have fast and cheap shipping to the US (USPS First Class is $2 and delivers in 3-5 days)

I've heard good things about them and have personally ordered an acekard 2i from them myself and it should arrive sometime this week.

 

mmm leetmod has it for a few bucks cheaper than simplymods.com, but I really like simplymods. I bought an acekard2i, it's spring started dying in a month, and I asked customer service about it (at the time they didn't know I was a reviewer) and they gave me a replacement no questions asked.

really happy about my experience.

Leetmod seems pretty legit though.

 

Here I found a cheap Acekard 2i by chance when I was searching for this flashcart.

http://www.dealperfect.com/detail.dp/sku.21154

This site sells the Acekard 2i for $13 with free shipping.

EDIT: Oops, sorry I didn't see that it was sold out.

Uh, apparently this can be bought by putting the URL into http://www.pbpurchase.com and clicking 'Add to cart'. Can anyone verify this?