a) due to the success of the first in the series momentum continued into this coin. Same series another great design.
b) This coin compared to others.Due to instant sell out there was 0 chance of losing investment. Supply and demand. Low supply high demand.
c) market has shot up again due to the success of the first coin. It took months to realise market price. This one didn’t need months as there was an example on the market. Only a very high mintage could have changed that.
e) Depends what value you mean. £2,500. Most likely not. More than £1000 certainly