On Friday, January 4, 2019 at 8:57:06 AM UTC-8, Dan Marotta wrote:
What an ingenious idea!Â* I'll bet the price difference between the self
launch version and a tug would make that an attractive proposition.

On 1/4/2019 2:12 AM, Jim White wrote:
Consider buying a self launching 21. More expensive but you will not
require a tug or tuggie to operate it.

Seems in Jan 2018 it was 90100 euro for a traditional ASK-21 and 153600 euro for the self-launcher, a 63500 euro or $72362 difference. That's right in the range that 235 Pawnees go for with lowish time engines. I don't know how the hourly running costs would compare over time.