I didn't know if I should post this in barns or here...

This time of year the grass isn't growing, and I am buying hay. I have 2 horses, and I usually buy square bales 60-80lb at $5.00 per bale. Seems like I am using 1/2 bale per day. I can buy a 1,000lb roll for $50.00. I have no place to put the roll, and some people have stated that if the horses are not used to unlimited hay, they can colic since the cut is longer than in a square bale...

My options are:

Buy a 10x10 or 10x16 metal canopy for $200 to $250, and put the round bale under it. Possible risk to horses health?

Continue buying square bales since I do not have too many horses.

I would like input on the risk of horses eating from round bales vs square... If any... And if a small metal canopy is the way to go?

My calculations:
Consumption: Approx 30lb hay/day cost $2.50 x 30 = $75/mo
Round bale: 1000lb/30 = 33 days is about $50/mo
Monthly savings $25
Return on canopy investment @ $200 would be 8-10 months.

Is the investment worth it??

Thanks,

Joe