1. Melissa started an online business, selling watches and men's fashion accessories via her Facebook page. She put out an advertisement on the page to the following effect:

'New perfume arrivals. Price indicated on each perfume. Send the amount indicated to M-Pesa number 07Z0 11XX22YY, and a follow up text message with the code of the perfume, and your location for dispatch. If outside Nairobi, your delivery will take at least 48 hours. No extra charges for delivery.'

Jason saw the advertisement and placed an order for a Bulgari cologne watch for Ksh 10,000 as indicated, and a follow up text message to Melissa's number. However, a week later, he hasn't received his cologne. Jason lives in Ruaka, just outside Nairobi. Applying the legal rules of offer, acceptance and consideration, advise Jason on whether he entered into a valid contract.