you wont get much cover for that I am not sure that would include liability cover which to me would be more important than anything. not E&L by any chance!
Foals have a habit of self inflicted injury!
Cheapest is not the best policy when insuring foals; you want the most reliable as they are a high risk category and for me, that's KBIS every time. I think Merlin's is about £300 for £2000 and vet cover, cheap for the peace of mind for me.
ps: I have PL through BHS membership which cuts it down a lot, well worth that cost especially as it covers all your horses.