I just bought one of these. 1200 D, matching detachable hood. 50 gram fill. The shipping was a bit pricey but it came fast. All in it was a bit under $200
This store’s brand “Canadian Horsewear” is pretty tough. Links below to one specific one and the second link is to their rain sheet page where you’ll find more of the store brand. The prices are all in Canadian bucks so huge savings. However, they don’t ship to the US 
But, I am in that neighbourhood almost every Saturday so if the price of courier shipping (Canada Post is on strike right now) still makes it worth a shot, let me know. I could pick up on a Saturday and get it to a courier on Monday.
https://www.pleasantridge.ca/index.php/horsewear/blankets-rugs/rainsheets.html
I got this through Stateline, but its sold out there. I had never heard of the brand but wish it was more accessible because I was pretty impressed by it, especially for the price.
I bought pro-trainer blankets on stupid sale because I have a blanket shredder and always like to keep extras on hand (ie I have 10+ blankets for one horse, and that’s after decluttering my blanket stash…). That thing is hardy as all heck. My gelding wore the 100 gram for several weeks in a row and there is no sign of any foul play. It has stayed weirdly clean as well.
