Originally Posted by pcandyhk
...We are aiming to design one to fit most.
Our target cost is below 300 GBP, so that amount is enough to justify our project aim.
I imagine that cyclists interested in power meters generally spend far more than 300 GBP a year. Even though your target is 300, it'd be better to know what your typical customer spends per year on cycling. Consider what an avid cyclist might spend in a year on consumables like tires, tubes, chains, cogs, cables, bike components like wheels, saddles, bars, stems, pedals, rider gear like helmet, eyeglasses, shoes, gloves, riding apparel, miscellaneous expenses like entry fees, travel expenses, nutrition, books, publications, training materials, etc.. I haven't totaled my expenses, but they are much closer to 3000 GBP than 300. And yes, I would definitely spend 300 for decent power meter.
I think you'll also find that older riders have more discretionary income and spend more on their hobbies.