A 10,000 calorie shake? I don't think that's physically possible. I think there was a typo and someone meant to write 1000 calorie shake.
[FONT=wf_segoe-ui_normal][FONT=Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif]A lot of mass gainer shakes have 1000 calories per serving but they are going to be full of low quality carbohydrates and oils as fillers. It is pretty much a sure way to get fat. [/FONT][/FONT]
Your best option is to make your own high calorie shake. It'll be much cheaper, and provide much more nutrients then any mass gainer type of shake.
Buy a high quality blender and blend together the following:
2 scoops of a high quality protein powder such as wheytobuildmuscle from n2bm.com
oatmeal
natural almond butter or peanut butter
frozen fruit
banana
ice
chia/flax seeds
spinach/kale
You can easily make the shake 800-1000 calories. It'll taste better and be much cheaper.