diff --git a/lib/registration.rb b/lib/registration.rb
index 0b22c9bfb88ce55d86eed70c263bc3dd242e8874..06f028be74cff686766982d2a515c6822451e6e2 100644
--- a/lib/registration.rb
+++ b/lib/registration.rb
@@ -82,6 +82,13 @@ class Registration
 	class DataOnly
 		def self.for(customer, sim_kind)
 			cfg = sim_kind.cfg(customer.currency)
+			log.debug(
+				"DataOnly#for",
+				cfg: cfg,
+				customer_balance: customer.balance,
+				customer_currency: customer.currency,
+				cfg_price: cfg[:price]
+			)
 			unless cfg && customer.balance >= cfg[:price]
 				return PayForSim.new(customer, sim_kind)
 			end
diff --git a/lib/sim_order.rb b/lib/sim_order.rb
index dc7b04082a695251d6a6e1bd318b782504097c94..e10f2af74d230e40558aaab922efcc973b1cc72e 100644
--- a/lib/sim_order.rb
+++ b/lib/sim_order.rb
@@ -38,6 +38,7 @@ class SIMOrder
 
 	def self.for(customer, price:, **kwargs)
 		price = price.to_i / 100.to_d
+		log.debug("SIMOrder.for", balance: customer.balance, price: price)
 		return new(customer, price: price, **kwargs) if customer.balance >= price
 
 		LowBalance::AutoTopUp.for(customer, price).then do |top_up|