My experience is limited here but based on the LFSs I have in my area I will grade the prices based on where I go now (good deals). Monti: ??? Don't know.....I don't even know what a monti is. Trumpet coral: I play the trumpet. But I do not know what the coral looks like Shrooms: Good price. If it is a small store, I would offer $35 cash grab and go. Tax included. Mushrooms are soooooo common. I paid $20 for a a palm sized rock with 8 or so shrooms on it (twice) GSP: Excellent. I paid $40 for a pretty good sized rock that was really active. Hammer: Excellent. I haven't bought any, but I have paid attention to the price. Frogspawn: Excellent. Before I knew any better, I paid $30 at the expensive LFS for a one head. $15 for one head is a deal in and of itself IMO Birdsnest: ??? Don't know. Extra information: Xenia (Pulsating and regular): $10 per start Kenya trees: $5, $10 and $15 for small, med and large starts Now Xenia and Kenya Trees grow like weeds. If you can find anyone that will give you frags when they trim back their tank, that is the way I would go. I have been fortunate in that regard. Hope this helped. John.