Newegg offers the Asus RT-AC1200G Dual-Band 802.11ac Wireless Router for $79.99. Coupon code "EMCTVVB47" cuts that to $39.99. With free shipping, that's tied with last month's mention as the best deal we've seen for this router. (It's the lowest price now by $20.) It features four 5dBi antennas and four Gigabit Ethernet LAN ports.
June brings some big deals and sales, but you're better off postponing certain purchases.