We really need more information in order to be able to gauge a cost.
Thanks I asked about a plan with all basic functions
There is no standard price or minimum price for reseller hosting. If you are looking good uptime with good support then you need to pay $10-$20/mo for 5GB-10 GB Disk space.
Can any one tell about how much it will cost to buy a reseller plan as per market rate
Based on your requirements, I will recommend (insert random company you've never heard of) to be your best choice. They provide the best reseller hosting plans on earth.