I want to conduct a CBC in order to find out, whether a pay-per-use pricing plan is better than a flatrate. This brings along two difficulties:
1) A per-unit-price is much lower than a flatrate price, therefore the levels of the price variable have a much higher range than all other variables.
2) Subjects might find it difficult to trade-off between these two options because they cannot be really compared due to their differing consumption interval (one month for the flatrate, one unit for pay per use) and are just too different.
My question: If I conduct two separate CBCs - one for PPU, one for flatrate - is there a way to merge the results and predict choice for either option altough it was not part of the other option's CBC design, respectively?
1) Is it possible to compute choice probabilities, compare them, and whichever option has the higher probability, "wins"?
2) Is it possible to calculate the individual consumer surplus as monetary utility minus price and whichever option has the higher surplus, "wins"?
Or would it be better to simply conduct one common CBC despite the above mentioned problem?