Way back when LEGO opened up pre-orders for the Super Mario Starter Set, there was a free Gift With Purchase set came with every 71360 Adventures with Mario Starter Course that was ordered: 40414 Monty Mole & Super Mushroom. Pre-orders sold out lightning quick and thus this exclusive and elusive boxed set was going to be difficult but fear not, you may still have a chance if you live near a LEGO Brand Retail location. Give your local store a call and see if they have any Monty Mole sets leftover AND if they have the Starter Set available. You can only get the Monty Mole set with the purchase of the starter. Some stores may be allowing phone orders with curbside pick-up only. Some may even let you in the store by an appointment. You’ll have to call and find out. Me personally, I lucked out by calling my store at about 1:30pm yesterday afternoon and they still had stock. Some stores even received more Monty Moles than Starter Sets, so you may even be able to get one at a later date once stock of the Starters replenishes.
Your mileage may vary obviously, depending on your state, county, or even city is handling physical distancing guidelines, safety measures, and which businesses can open.