Sam is at the post office to mail a package. After he pays for mailing the package, the clerk asks if he would like to buy some stamps. Sam pauses...

#3. Sam is at the post office to mail a package. After he pays for mailing the package, the clerk asks if he would like to buy some stamps. Sam pauses to think before he answers. He doesn't have a credit card with him. After paying for the package, he has $30 in his pocket. Analyze this from an inventory standpoint. Identify the relevant considerations.