So, I'm going to be the jerk who says this, but I find the model of offering DSD downloads for twice the price as SACDs to be seriously frustrating. I understand it's expensive to produce recordings, but look at the model BIS uses with eClassical - much lower pricing and frequent half-offs, leads me to spend a lot more money there.
And then there's the whole issue that Channel only provides DSF files that are only useful with a very specialized playback setup. I went through a serious rigmarole with the (excellent, btw) Ivan Fischer Composer's Portrait DSD download getting it to play in multichannel, finally figuring out that there's an undocumented ability to burn a dual-layer DSD disc and then play it in multichannel via a PS3. I know this would be controversial, but it would be very handy to provide a compiled SACD image file to purchasers so they can create a non-spec SACD that will play in older machines like the Oppo 83 and 93.
Also, the site seems to have a bug - I tried to purchase 4 SACDs, and when I select credit card or paypal, in both cases I suspect the site is supposed to reveal a place to enter that information, but nothing happened.
Edit to add: oh, also, the checkout page is not secure. That probably needs to be fixed ASAP.