This is the 4589th most frequent Turkish word.
bedelli
"Bedelli" means "paid" or "subject to payment" and is often used to refer to "paid military service" in Turkish.
Here 'bedelli' modifies 'askerlik', meaning 'paid military service', indicating the service is not voluntary but conditional upon payment.
Bedelli askerlik, bir ücret karşılığında askerlik hizmetini yapmaktır.
Paid military service refers to completing military duty for a fee.
In this sentence, 'bedelli' relates to 'kampanyalar' (campaigns) implying these campaigns require a fee for participation.
Bu ürünler, bedelli kampanyalarla satılmaktadır.
These products are sold through paid campaigns.
'Bedelli' here describes 'giriş ücretini' (entrance fee), showing that entry to the event requires the payment of some fee.