A question about reacting

[lol|\|00b!]

Forgive my |\|00bish question, but it's something we've been wondering about for a while...

A lot of card games say this is legal, but then Spoils is not like other card games. I've been hesitant to ask this question because, while I think it is legitimate, when I ask it out loud, it makes me sound like a total |\|00bl17.
Anyway,
Can you react to the end of a player's turn? Like, for instance, in Magic or Vs.?

For instance, let's say I have 6 rescources unspent during my opponent's turn (cuz I lay it down like dat) and my opponent has finished his turn. Can I react to the end of his turn by paying 4 to lay down a resource then paying 3 to draw a card? Or, can you absolutely not react to your opponent's turn ending?
The rules don't clarify this for me, unless I'm missing something REALLY apparent.

Thanks for your time,
lol|\|00b!

[joshlytle]

Responding To Your Opponent
You are allowed to respond when your opponent plays a card, uses an ability, or ends their turn. You cannot respond to your own cards, abilities, or ending of turn.

To respond, follow these steps:
1. Wait for your opponent to pay the cost for a card or ability or announce the end of their turn.
2. Announce you want to respond.
3. Pick a tactic card in your hand or an ability on a card you control in play.
4. Play the tactic card or use the ability. (see “How to Play a Card” or “How to Use an Ability”)
5. Repeat steps 2 through 4 as many times as you want.

The above excerpt from the rules should answer your question.

Josh Lytle