A fifth-row seat at the Barclays Center goes for $1,256.00. A seat in the front row, with a “meet & greet package” thrown in, will cost you up to $3,000. Wheelchair seating in the back of the house is listed at $400, while a spot in the upper tiers could be had for $29.50. The latest megaproduction from U2 or Beyoncé? Nope. It’s the price of admission to see Michelle Obama on tour for “Becoming,” the former first lady’s memoir, which is scheduled to be published Nov. 13. After keeping a relatively low profile since leaving the White House, Obama...