a.      A start-up ecommerce platform is strategizing on the price

to be charged to sellers and buyers who use the platform. Buyers typically use only one ecommerce platform out of the many available. Sellers are present on each platform.                     
i.       In the long run, which side should bear the greater burden of the platform's charges - the seller side or the buyer side? Explain. 
(Maximum word limit 180)
ii.                 In the short run, which side should the firm focus its marketing efforts on?
(Maximum word limit 120)