Where to get the best replacement battery for my Galaxy Tab A?

[Android Central Question]

My Galaxy Tab A is three or four years old. It has become a real pain to get to charge. Had it on two different chargers, all day and night and it is still at 36%. I see many places selling the SM-T550 battery. Just Leary as the prices range from less than $20 to over $50. The ratings for most all four stars.