Comparing prices of chikoo seeds in bulk online

The prices of chikoo or sapota seeds in bulk vary greatly online depending on the website which is checked.

In January 2018, the prices of the seeds are as follows:
Chajed Gardens 1 kg seed : Rs 2160
Nursery Live 0.5 kg seeds : Rs 3641 , not in stock
Plantsguru 1 kg : Rs 6100

So clearly there is a lot of variation in the prices of chikoo seeds online