Take a private shared taxi from jalpaiguri to Sikkim...it cost nearly 200 per person...if you want to go from bus that is also available...but in my case I choose taxi because of seeking relaxation... enjoyed a lot on the way.. beautiful scene of nature..so travelling became easier..
When I reached hotel at night that had already booked from oyo room..it cost around 700 per night...if you want to spend less on room then you can choose it...now 2nd day visited local sightseeing place...for this I have booked a private taxi which cost around 1000 rupees...so you can enjoy and I believe that if you interested to visit then your visit becomes too much interested...
Ropeway..Hanuman talk.ganesh talk are some visiting site and enjoyed a lot 2nd day...after that we came back to the hotel...and in the same day I have booked a trip for lachung and yumthang valley...for this I contact to hotel owner they have arranged my trip in less amount nearly you may say around 3000 per person for 2 days including food launch meal and hotels .you may seen the night view of Sikkim from my hotels..
Early morning we were preparing to go...and our trip started...on the way you may see amazing beauty scene of nature...
After reaching hotel at lachung....next day we were going for yumthang valley and zero point...it's an amazing beauty of nature that I can't describe...just like heaven..I have no words to explain...
we came back to the hotel...and next day we back to the sikkim...so I enjoyed a lot...I had no time for experiencing nathula...if you have a more holiday then you must enjoy that part also...
If you talk about the total cost of visiting Sikkim and covering all the part that I covered then you will have to spend 6000 rupees for that.. believe me it is very cheaper to visit Sikkim...this cost excluded flight or train cost