Ginger's spay was about $200 all together including blood work, meds, everything and her spay was a bit complecated because she did go into heat.
Get your pup spayed at 6months or soon after. Dont wait until the first heat because their chances of cancer goes up after each heat.
Some signs of heat include spotting, swollen vulva, excessive licking of the vulva area, usually the female is not good at cleaning themselves during their first heat so its pretty easy to tell. Ginger was very swollen right before her cycle began.