Based on the data provided in the above spreadsheet, what product line extension strategy should Cuteness for You pursue?

Add the premium subscription service.

$2.$ Taylor conducts additional market research and discovers that the target market would be willing to pay $$140$ for the premium subscription without a negative impact to demand. Assuming that increasing market share is the primary goal for his firm, is the premium subscription product line extension the best strategy?

Yes, because increasing the price of the subscription service increases profit by $$29,500.$

$3$: Taylor has decided that the goal really should be to maximize the number of subscriptions sold, regardless of whether the subscription is basic, standard, or premium. Given his new goal, which product line extension strategy should Cuteness for You pursue?

Add both the basic and premium subscription product line extensions.

$4.$ Sales in Taylor's test market have far exceeded expectations, so he revises his sales estimates as follows: Strategy $1$: premium $$125$ subscriptions increase to $4000$; Strategy $2$: basic $$75$ subscriptions increase to $8000$ ; and Strategy $3$: premium $$125$ subscriptions increase to $2000$ and basic $$75$ subscriptions increase to $6000.$ Update the spreadsheet to reflect the new sales units, and determine which strategy maximizes market share.

Strategy $2$: add the basic subscription service to increase market share