Their batteries consistently come up as stupidly cheap, and the reviews of the site are fairly bad, but at $50 for a motorcycle battery...it's tempting for sure.
batteryclerk.ca
For reference, other sites are coming up from $130-180 for the 'same' battery.
Some sellers are sending the battery and acid separately and the buyer is responsible for the fluid to be put in, and then charged. Not sure how long my little trickle charger would take to get this small battery charged up.

Yuasa YT12B-BS Powersports Replacement BatteryDefault Title
Shop for a Quality, Low-Price Yuasa YT12B-BS () Replacement Battery at a super low every day price. BatteryClerk.ca sells brand new, affordable premium quality Powersports batteries and accessories.

For reference, other sites are coming up from $130-180 for the 'same' battery.
Some sellers are sending the battery and acid separately and the buyer is responsible for the fluid to be put in, and then charged. Not sure how long my little trickle charger would take to get this small battery charged up.