>>2545695enty artists usually release 1 or 2 works a month on average. these can range from image sets to short manga images. price on average is 500 yen, which is about 5USD. to pay for past works, you have to select which months that the past work was available on and pay 1.2x more.
personally, enty rewards are generally of lower quality because of it's cheap price. true quality sets are in patreon, yes it is more expensive but quality is much better. for example, suiton charges $30 to get access to all of his works for that month plus extra, whereas mentaiko releases 1 set per month. sure you pay a bit more, but he offers quality and quantity.